using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            this.TextBox1.Text = "" + TextBox1.Text;          
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
           
            if (TextBox1.Text=="")
            {
                this.Label6.Text = "请输入新闻内容！";
            }
            else if(TextBox1.Text!=null)
            {
                this.Label6.Text ="此内容来自 "+ DropDownList1.Text+" 谢谢您提交的新闻！";
                 this.Label5.Text = System.DateTime.Now.ToString();
            }
           
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            this.TextBox1.Text = null;
             this.Label5.Text = null;
             this.Label6.Text =null;
        }
    }
}